File content as of revision 1:8a9ac822aab7:

#include "mbed.h"

DigitalOut Cool(PA_15,0);
//DigitalOut Led(D13,0);
CAN can1(PA_11, PA_12, 1000000);                    //(Inverter, PadalBox, DashBoard) 1Mbps, contain critical torque command message
CAN can2(PB_5, PB_13, 500000);                      //(BMS1, BMS2) 500kbps, contain battery status
Serial pc(USBTX, USBRX, 115200);

CANMessage can_msg_1;
CANMessage can_msg_2;

uint8_t CAN_flag_1 = 0;
uint8_t CAN_flag_2 = 0;
uint8_t RTD_State = 0;                              // use as bool

void CAN_RX1(void);
void CAN_RX2(void);

int main()
{
    CAN_flag_1 = 0;
    CAN_flag_2 = 0;

    can1.attach(&CAN_RX1, CAN::RxIrq);              //CAN1 Recieve Irq
    can2.attach(&CAN_RX2, CAN::RxIrq);              //CAN2 Recieve Irq

    while(1) {
        if(CAN_flag_1) {
//            Led = RTD_State;
            Cool = RTD_State;
            pc.printf("%d\r", RTD_State);
            CAN_flag_1 = 0;
        }
    }
}

void CAN_RX1(void)
{
    if(can1.read(can_msg_1)) {
        switch(can_msg_1.id) {                                                  //Filtered the input message and do corresponding action
            case 0xAA:
                //Internal state address
                RTD_State = can_msg_1.data[6] & 0x01;                           //get bit "0", result ( 1 = RTD, 0 = OFF )
                CAN_flag_1 = 1;
                break;
        }
    }
}

void CAN_RX2(void)
{
    if(can2.read(can_msg_2)) {
    }
}